258 GEOLOGICAL SURVEY OF NEW JERSEY. 
Var. maximus, Morong. 
Hunterdon: In the Delaware River at Tumble Station— 
Porter. 
P. rufescens, Schrad. “ 
Warren: In the Delaware River at Belvidere—Britton. 
P. Zizii, Mart. & Koch. (P. lucens, L., var. minor, Nolte.) 
Sussex: Swartswood Lake—Porter; Lake Hopatcong— 
Britton.* 
P. preelongus, Wolf. 
Morris: Budd’s Lake—Porter, 1869. 
P. perfoliatus,. L. 
In ponds and streams. Apparently frequent throughout the 
State. 
P, crispus, L. 
In streams. Union: Plainfield—Tweedy. Morris :—Aus- 
tin; Lake Hopatcong—Porter. Passaic: Passaic—Leggett. 
Warren: Musconetcong River—Porter. Camden: In the 
Delaware River—Parker. Hunterdon: In the Delaware, rare 
—Best. 
P. zosterzefolius, Schum. (P. compressus, Fries.) 
Bergen: Hackensack River—Austin. Sussex: Waterloo— 
Porter. 
P. pauciflorus, Pursh. 
In ponds or slow streams. Frequent in the northern counties. 
P. pusillus, L. 
In ponds and streams. Common throughout the State. 
P. Tuckermani, Robbins. 
In pine-barren streams—Austin. Burlington: Near Atsion 
—Canby; Pleasant Mills—E. Diffenbaugh. Camden: Atco— 
Commons. Gloucester: Near Malaga—Parker. 
P. pectinatus, L. 
Bergen: Hackensack River—Austin; Passaic River— 
Schuh. Sussex: Hewitt’s Pond, Andover and Lake Grinnell— 
* P. lucens, L., is not certainly known from the State. New Jersey specimens re- 
ferred to it prove to be this species. 
